Hi everyone,
I'm Egbert from the Netherlands.
I'm considering to get myself a twister mkII A. At least that's how it's advertised.
It's a full grp version from '73. She is in desperate need of some love and attention. First of all the rudder has osmosis.
So my question is how hard is it to detach, and later reinstall the rudder?
Until now I only have had a quick walk around as I had more boats to visit, but of all the boats I have seen so far the twister has something special to me.
Oh and are there any special things to look after when I plan the next visit?
Cheers all!
Hi Egbert,
Taking off the rudder is easy. First remove the tiller, then unscrew the screws or bolts that hold the retaining strap that's just below the propeller aperture. Find one strong friend plus another person. The two strong people stand on the ground on either side of the rudder and the 3rd person looks after the top of the rudder stock with a rope tied around it. Lift the rudder up off its pintles (about 25mm) and lower it to the ground. Job done.
If she's an all GRP boat take a good look at the mast step arrangement and satisfy yourself that there is no deflection. Beyond that most of what you see is what you will get. Remember that big defects will distract you so that you may not notice smaller ones.
Good luck and do ask if you have more questions.
John
Hi John, sorry i'm a bit slow to respond. Thanks for your advise.
I am the proud owner of 'Afridi' !
The rudder was easy to remove. The osmosis is not extremely bad, but the rudder is full of water. So the plan is to cut some openings, pour waterproof 2k epoxy foam in and glass the holes with epoxy again.
I removed the old antifouling of the hull and the hull seems to be in good shape. So I will give it a good sanding and two layers of epoxy to seal everything off. And some small repairs with it.
That will have to do for the winter as the current location is quite far from home.
Can't wait to go sailing 🙂
You have not wasted any time!
While you have the rudder off take a careful look at the fillet welds on the top two pintles. Good eyesight, magnifying glass, and best of all crack detector spray. I guess you know about such things anyway. I'd also suggest that you do a careful light hammer test on the bottom pintle. It can have failure, unseen, where it is welded to the tang which is glassed in to the rudder. Look at the back of the stainless securing strap too, that can suffer from crevice corrosion.
Good luck,
John
Well done Egbert. Welcome to the club.
I think John has covered the rudder problem although I tried filling Bits rudder and have never succeeded completely, although I dont think it matters.
I replaced the lower pintle and bush recently, details are in tghe tech section, but any queries please ask.
I would say that if you have done the hard work of stripping the antifoul off, the hardwork is done and especially as you intend epoxying the hull. Consider coppercoat, you get 4 coats of epoxy (with copper added) and never have to antifoul again. It repays itself in 5-6 years and also only a pressure wash off and you are ready to launch again.
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